Change in Accounting for Retirement-Related Benefits (Details) - USD ($)
$ / shares in Units, $ in Millions |
3 Months Ended |
9 Months Ended |
|
Oct. 29, 2016 |
Oct. 31, 2015 |
Oct. 29, 2016 |
Oct. 31, 2015 |
Jan. 30, 2016 |
| Pension |
$ 1
|
$ (17)
|
[1] |
$ 5
|
$ (52)
|
[1] |
|
| Income/(loss) before income taxes |
(64)
|
(118)
|
[1] |
(184)
|
(374)
|
[1] |
|
| Income tax expense/(benefit) |
$ 3
|
$ (3)
|
[1] |
$ 7
|
$ 8
|
[1] |
|
| Basic earnings/(loss) per common share |
$ (0.22)
|
$ (0.38)
|
[1] |
$ (0.62)
|
$ (1.25)
|
[1] |
|
| Diluted earnings/(loss) per common share |
$ (0.22)
|
$ (0.38)
|
[1] |
$ (0.62)
|
$ (1.25)
|
[1] |
|
| Reclassifications for amortization of net actuarial (gain)/loss |
$ (3)
|
$ 0
|
[1] |
$ (5)
|
$ 0
|
[1] |
|
| Deferred tax valuation allowance |
1
|
(4)
|
[1] |
0
|
(7)
|
[1] |
|
| Other Comprehensive Income (Loss), Net of Tax |
2
|
(10)
|
[1] |
(1)
|
(19)
|
[1] |
|
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
(65)
|
(125)
|
[1] |
(192)
|
(401)
|
[1] |
|
| Benefit plans |
(14)
|
(25)
|
[1] |
(41)
|
(73)
|
[1] |
|
| Reinvested earnings/(accumulated deficit) |
(3,198)
|
(2,876)
|
[1] |
(3,198)
|
(2,876)
|
[1] |
$ (3,007)
|
| Net income/(loss) |
(67)
|
(115)
|
[1] |
(191)
|
(382)
|
[1] |
|
| Accumulated other comprehensive income/(loss) |
(492)
|
(369)
|
[1] |
(492)
|
(369)
|
[1] |
$ (491)
|
| Deferred taxes |
$ 3
|
(8)
|
[1] |
$ 3
|
(5)
|
[1] |
|
| Previously Reported [Member] |
|
|
|
|
|
|
|
| Pension |
|
12
|
|
|
35
|
|
|
| Income/(loss) before income taxes |
|
(147)
|
|
|
(461)
|
|
|
| Income tax expense/(benefit) |
|
$ (10)
|
|
|
$ (19)
|
|
|
| Basic earnings/(loss) per common share |
|
$ (0.45)
|
|
|
$ (1.45)
|
|
|
| Diluted earnings/(loss) per common share |
|
$ (0.45)
|
|
|
$ (1.45)
|
|
|
| Reclassifications for amortization of net actuarial (gain)/loss |
|
$ 18
|
|
|
$ 53
|
|
|
| Deferred tax valuation allowance |
|
0
|
|
|
0
|
|
|
| Other Comprehensive Income (Loss), Net of Tax |
|
12
|
|
|
41
|
|
|
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
|
(125)
|
|
|
(401)
|
|
|
| Benefit plans |
|
4
|
|
|
14
|
|
|
| Reinvested earnings/(accumulated deficit) |
|
(2,221)
|
|
|
(2,221)
|
|
|
| Net income/(loss) |
|
(137)
|
|
|
(442)
|
|
|
| Accumulated other comprehensive income/(loss) |
|
(1,024)
|
|
|
(1,024)
|
|
|
| Deferred taxes |
|
(15)
|
|
|
(32)
|
|
|
| As Adjusted [Member] |
|
|
|
|
|
|
|
| Income/(loss) before income taxes |
|
$ (118)
|
|
|
$ (374)
|
|
|
| Basic earnings/(loss) per common share |
|
$ (0.38)
|
|
|
$ (1.25)
|
|
|
| Diluted earnings/(loss) per common share |
|
$ (0.38)
|
|
|
$ (1.25)
|
|
|
| Reclassifications for amortization of net actuarial (gain)/loss |
|
$ 0
|
|
|
$ 0
|
|
|
| Deferred tax valuation allowance |
|
(4)
|
|
|
(7)
|
|
|
| Other Comprehensive Income (Loss), Net of Tax |
|
(10)
|
|
|
(19)
|
|
|
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
|
(125)
|
|
|
(401)
|
|
|
| Net income/(loss) |
|
(115)
|
|
|
(382)
|
|
|
| Effect of Change [Member] |
|
|
|
|
|
|
|
| Pension |
|
(29)
|
|
|
(87)
|
|
|
| Income/(loss) before income taxes |
|
29
|
|
|
87
|
|
|
| Income tax expense/(benefit) |
|
$ 7
|
|
|
$ 27
|
|
|
| Basic earnings/(loss) per common share |
|
$ 0.07
|
|
|
$ 0.20
|
|
|
| Diluted earnings/(loss) per common share |
|
$ 0.07
|
|
|
$ 0.20
|
|
|
| Reclassifications for amortization of net actuarial (gain)/loss |
|
$ (18)
|
|
|
$ (53)
|
|
|
| Deferred tax valuation allowance |
|
(4)
|
|
|
(7)
|
|
|
| Other Comprehensive Income (Loss), Net of Tax |
|
(22)
|
|
|
(60)
|
|
|
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
|
0
|
|
|
0
|
|
|
| Benefit plans |
|
(29)
|
|
|
(87)
|
|
|
| Reinvested earnings/(accumulated deficit) |
|
(655)
|
|
|
(655)
|
|
|
| Net income/(loss) |
|
22
|
|
|
60
|
|
|
| Accumulated other comprehensive income/(loss) |
|
655
|
|
|
655
|
|
|
| Deferred taxes |
|
$ 7
|
|
|
$ 27
|
|
|
|
|